# 天天向上第四问

def dayUP(df):
    dayup = 1
    for i in range(365):
        dayup = dayup * (1 - 0.01)
    else:
        dayup = dayup * (1 + df)
    return dayup

dayfactor = 0.01

while dayUP(dayfactor) < 37.78:
    dayfactor += 0.001

print("工作日的努力参数是:{:.3f}".format(dayfactor))